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tc: remove unused redirect ttl

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improves ingress+u32 performance from 22.4 Mpps to 22.9 Mpps

Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Florian Westphal <fw@strlen.de>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jamal Hadi Salim 2015-05-01 22:19:43 -07:00 • committed by David S. Miller
parent 4256af62c4
commit c19ae86a51
2 changed files with 2 additions and 9 deletions
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9
net/core/dev.c
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@ -3531,18 +3531,9 @@ EXPORT_SYMBOL_GPL(br_fdb_test_addr_hook);
*/
static int ing_filter(struct sk_buff *skb, struct netdev_queue *rxq)
{
struct net_device *dev = skb->dev;
u32 ttl = G_TC_RTTL(skb->tc_verd);
int result = TC_ACT_OK;
struct Qdisc *q;
if (unlikely(MAX_RED_LOOP < ttl++)) {
net_warn_ratelimited("Redir loop detected Dropping packet (%d->%d)\n",
skb->skb_iif, dev->ifindex);
return TC_ACT_SHOT;
}
skb->tc_verd = SET_TC_RTTL(skb->tc_verd, ttl);
skb->tc_verd = SET_TC_AT(skb->tc_verd, AT_INGRESS);
q = rcu_dereference(rxq->qdisc);